Codex-Backed LangChain Graph

Source:

• examples/langchain/codex_graph.py

This example demonstrates the helper-to-adapter path for LangChain:

• codex-auth-helper builds a Codex-backed ChatOpenAI
• langchain.agents.create_agent(...) owns the graph
• langchain-acp exposes that graph through ACP

Run it:

uv run python -m examples.langchain.codex_graph

Required local state:

~/.codex/auth.json

If you have not logged in yet:

codex login

Install the helper with LangChain support:

uv add "codex-auth-helper[langchain]"

pip install "codex-auth-helper[langchain]"